An interesting read from MSN.
https://www.msn.com/en-us/entertainment/comics/10-batman-characters-who-vanished-completely/ar-AA23oy9u?cvid=6aba58449d4340af95893494e3504a02&ocid=edgntpruby&uxmode=ruby&ei=14 (https://www.msn.com/en-us/entertainment/comics/10-batman-characters-who-vanished-completely/ar-AA23oy9u?cvid=6aba58449d4340af95893494e3504a02&ocid=edgntpruby&uxmode=ruby&ei=14)